Interchangeable pattern carrier for jacquard cards, particularly for knitting machines



July 9, 1940. v H. KORBER INTERCHANGEABLE PATTERN CARRIER FOR JACQUARDCAR PARTICULARLY FOR KNITTING MACHINES Filed July 1, 1939 IIIII|III'IIII III II" a v f70 32 1d c 176.2 /-70. 25' d e 6 .f 9 E PatentedJuly 9, 1940 UNITED STATES IN TERCHAN GEABLE PATTERN CARRIER FORJACQUARD CARDS, PARTICULARLY FOR KNITTING MACHINES Hans Korber, Couvet,

the firm Edouard Dubied & Cie. Anonyme, Neuchatel,

Switzerland, assignor to Socit Switzerland Application July 1, 1939,Serial No. 282,377 In Switzerland July 5, 1938 6 Claims.

This invention relates to interchangeable pattern carriers or patterncontrolling devices for jacquard cards particularly for knittingmachines.

There are jacquard cards existing,.for example, for fiat knittingmachines, which are pro vided with interchangeable pattern carrierspermitting the pattern to be changed. The known interchangeable patterncarriers have, however, various drawbacks in consequence of which theycould be introduced into practice only with moderate success. Amongstthese drawbacks are unreliability of operation, due to the fact that thepattern carriers become too easily detached from the card, or else thepattern carriers are so firmly secured to the card that they can beremoved only by means of special implements, which procedure isdetrimental above all to cards provided with a fine division of theirapertures and used, for example, in machines having multiple mechanisms.A further drawback of the known pattern carriers resides in the presenceof clamping springs the open ends of which are prone to become tangledby hooking to the backside of the card. 7

The interchangeable pattern carrier constructed according to the presentinvention avoids all these drawbacks.

According to the invention, the face plate provided on the patterncarrier has arranged on the underside thereof a clasp which extends fromone side of the face plate to an opposed side thereof and is provided ateach of its end porthe face plate of the pattern carrier at one of itsend portions, while the other end portion bears resiliently on the faceplate. By this means, very great resiliency of the curved spring yoke ofthe clasp is obtained, which yoke in certain circumstances may be ofvery small dimensions, so that an easy insertion and removal by exertingan adequate pressure on the free end portion of the clasp is permanentlyensured.

In the drawing several embodiments of the invention are illustrated byway of example only, in which:

Fig. 1 is a perspective View of a part of a jacquard card with thepattern carrier inserted in position;

Figs. 2, 2a, 2b illustrate a first embodiment in three views seen fromdifferent sides, and

Figs. 3, 3a, 3b and 1, 4a, 4b each show in similar views a second and athird embodiment, respectively.

The pattern carrier lug for covering an aperture a in the jacquard cardbordered by edges adjacent the opposing longitudinal marginal portionsof said card, as shown in Figs. 1, 2, 2a

7 and 2b, is provided with a face plate 2) on the underside of whichaspring clasp c is arranged one end portion of which is fixed to theface plate 17, at d, by forming an integral piece of material with thisplate. Alternatively, this end portion of the clasp may be connected tothe face plate, for example, by soldering. The other or free end portione of the clasp c bears resiliently against the backside of the faceplate I). The clasp 0 thus extending with its curved yoke from one endof the face plate I) to the opposite end thereof is provided at its endportions with kerfs and g, respectively, provided by corresponding bendsformed in the clasp. By means of these kerfs fig the clasp c engagesover the respective edges of one of the apertures a and interengageswith the latter by spring action, whereby the jacquard card enters intofirm sup porting engagement with the pattern carrier from twodirections. e

After the pattern carrier has been removed from the card, the relaxedclasp c projects with its free end portion e somewhat beyond thecorresponding end of the face plate I), as shown in Fig. 2, so thatpressure can readily be exerted on this end portion of the clasp by handfor temporarily deforming the clasp particularly, for removing thepattern carrier from the aperture in the card. The yoke of the clasp cis provided with a bossed middle portion merging with flared straightguide planes leading to the kerfs e and f, respectively, so that thepattern carrier can be inserted with ease merely by exerting pressurefrom above on the face plate to be guided toward the jacquard card byhand, while the clasp is temporarily deformed. With this constructionthe face plate b and the clasp c are both of the same width as theaperture a in the card by which means the pattern carrier is givensupport by the jacquard card also in the lateral directions.

arranged on the face plate 12. These are positioned in the middleportion of the face plate I) considering the length of the latter andare spaced at a distance of two apertures a in the, card, whereby thepatterncarrier can be se-" curely fastened to the card. a

In all the exemplifications explained the longitudinal direction of theclasp is parallel withthe transverse direction of the jacquard card.Therefore, for the interchangement of the pattern carrier the claspneeds to be influenced only from a side of the jacquard card and of thepattern carrier, which is altogether freelyaccessible, so that theconnecting tongues separating adja-' cent apertures in the card are notdetrimentally affected and no special implements are needed even withthe smallest divisions of the apertures.

What I claim is:

1. In an interchangeable pattern carrier for jacquard cards particularlyfor knitting machines, a jacquard card, a pattern carrier for insertionin apertures in said card bordered by edges adjacent opposing marginalportions of said card, a face plate on said carrier for the reception ofa pattern, at least one clasp arranged on the underside of said faceplate so as to extend from one side of said face plate to an opposedside of said plate, and end portions on said clasp, one of said endportions being fixed to said face plate and the other bearingresiliently against said plate and each of said end portions beingprovided with a kerf for 'interengagement with said edges of therespecreception of a pattern, at least one stirrup-like clasp arrangedon the underside of said face plate so as to extend from one side ofsaid face plate to an opposed sideof said plate, a bowed middle portionprovided on the yoke of said stirrup-like clasp, flared guide surfacesmerging with said bowed middle portion, and end portions on said claspeach provided with a kerf at the junction with the flared end of therespective guide surface, said kerfs interengaging with said edges ofthe respective card aperture, for holding and detachably securing saidpattern carrier on said card, by insertion of said carrier in said cardmerely by exerting pressure on said face plate. 3. In combination withan apertured jacquard card, particularly for knitting machines, aninterchangeable pattern controlling lug for insertion in apertures ofsaid card, comprising a face plate, at least one clasp thereon formed bya resilient member extending over the under face from one edge of saidface plate and bearing against the opposite edge thereof, said memberbeing grooved .to engage the edges of the respective aperture and tdetachably securesaid lug on said card.

4. In combination with an apertured jacquard card, particularly forknitting machines, an interchangeable pattern controlling lug forinsertion in apertures of said card, comprising a face plate, at leastone clasp thereon formed by a resilient member extending over the underface of said face plate and fixed at one end to one edge of said plateand with its free end bearing against the opposite edge of said faceplate, said member having kerfs adapted to engage the edges of therespective card aperture and to detachably secure said lug on said card.

5. In combination with an apertured jacquard card, particularly forknitting machines, an interchangeable pattern controlling lug forinsertion in the card apertures, comprising a face plate adapted tocover a plurality of said apertures, at least one resilient clasp fixedwith one end to one side and extending over the under face of said plateand bearing with'its free end against the opposite side of said faceplate, the end portions of said clasp each having a kerf adapted toengage the end edges of the respective card aperture and to detachablysecure said lug on saidcard.

6. In combination with a jacquard card, havingoblong apertures, aninterchangeable pattern controlling device for covering apertures ofsaid card, comprising a face plate, clasps thereon each formed by aresilient yoke shaped member extending over the under face of said faceplate and fixed at one end to one of the edges of said face plate and atits free end bearing against the opposite end edge of said face plate toform with the latter a closed loop, said member being grooved at itsends to engage the narrow edges of an aperture and to detachably securesaid device on said card.

HANS KORBER.

